No picture or sound

When I turn my set on, there is sound and no picture for about 30 seconds, then the set shuts off, the power button light blinks and I can hear the fan running.
Is this possibly just the lamp needing to be replaced or something totally different ?

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The red light is indicating the set has shut down for a specific reason. You can dtermine the reason by going to the sets front panel and pressing the menu button and the device/input button both in together and hold for 6 seconds. The light will switch and begin to blink a series of blinks( First number) and pause briefly then blink another number of blinks (second number) then it will repeat that same two digit blink code. Let me know the code and I will let you know what happened to shut the set down. Respond to this same post for assistance.

helloFive blinks - AKB circuit (automatic kine bias), the
timer/standby indicator blinks for about 30 seconds then goes to the
self-diagnosis function. Something is wrong with the video. Check video
out, Q705, 732, 761 and other components on the C board, also check
Q218, 219, 220 on the A board. In addition, unit could be in IK
blanking, try turning up screen slightly.